A mobile terminal comprises a main board (10), an ambient light sensor module (20), and an antenna (30). The main board (10) comprises a first surface (12) and a second surface (14) disposed oppositely. The first surface (12) faces the antenna (30) and is provided with a feed point (32) of the antenna (30). The ambient light sensor module (20) comprises a sensor (22) and an adaptation board (24). The sensor (22) is disposed on a top surface of the adaptation board (24), and a bottom surface of the adaptation board (24) is welded to the second surface (14). The adaptation board (24) comprises a line layer (242) disposed on the top surface, a ground layer (244) close to the line layer (242) and located between the line layer (242) and the bottom surface, a first clearance region (246) located between the ground layer (244) and the main board (10), and a connection portion (248) configured to electrically connect the line layer (242) with a circuit on the main board (10). The connection portion (248) is located outside the first clearance region (246), and a region of the main board (10) sandwiched in between the antenna (30) and the adaptation board (24) forms a second clearance region (16). The mobile terminal ensures a sufficient antenna clearance space, and thus transmission efficiency of the antenna is guaranteed.